9:15 AM - 9:30 AM
*Tomoya Nishimura1,2, Fumiaki Mori2,3, Takeshi Terada4, Minoru Ikehara3, Yuki Morono2 (1.Graduate School of Integrated Arts and Sciences, kochi university, 2.Kochi Institute for Core Sample Research, Japan Agency for Earth-Marine Science and Technology (JAMSTEC), 3.Marine Core Research Institute, Kochi University, 4.Marine Works Japan)